### Name: Mr. Leslie E. Ross

Title: Plant Manager Company: NRG Norwalk Harbor Operations, Inc. Sign Date: 7/26/2010 Name: Richard Kopacz Title: Project Manager Company: TRC Companies, Inc. Sign Date: 7/26/2010 Permitted Facility Representative / Date Testing Company Representative / Date



## Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2 Final Test Report for

/ / Based on information and belief formed after reasonable inquiry, I certify that the statements and information in this test report are true, accurate, and complete. I have reviewed all testing details and results in this test report and hereby certify that the test report is authentic and accurate.

Sunday, January 30, 2011 Page 1 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 Facility Information:
Norwalk Harbor Station
Manresa Island Ave

South Norwalk CT 06854 Contact: Mr. Leslie E. Ross Phone: 203-854-3622 Fax: 203-854-3623 Email: leslie.ross@nrgenergy.com Testing Company: TRC Companies, Inc.
21 Griffin Road North

Windsor CT 06095 Contact: Richard Kopacz Phone: 860-298-6265 Fax: 860-298-6399 Email: rkopacz@trcsolutions.com

Air Permit Number: 548 Permitted Source ID/Name: 2 Permitted Maximum Process Rate: N/A Max. Normal Operation Process Rate: N/A Target Process Test Rate N/A

Description of the source (including control equipment). Please see the attachments for source or process flow diagram: Unit 2 is a 1776 MMBtu/hr Combustion Engineering dry bottom, tangentially fired oil boiler with low NOx burners, SNCR, and an ESP. Industry/SCC/NAIS 221112

Sampling Location Information:

Test Parameter Information: AFS #: 0900100142 FRS #: 110000603106

SCC / Description 10100404 External Combustion Boilers - Electric Generation - Residual Oil - Grade 6 Oil: Tangential Firing

The following state and federal regulations that apply to the proposed testing:

Location Round

Duct Diam. Distance from upstream dist. Distance from

downstream dist. Number of

Traverse Ports Equiv. Diam Min.Travers Points Rect. Duct Length /Width Stack Exit 200 2381 1272 4 0 3 0 0

Target Parameter Test Method Number of

Test Runs Test Run

Duration Sample

Points Comments Location Carbon Monoxide Method 10 3 180 0 Stack Exit Formaldehyde Method 0011 3 120 0 Stack Exit 2,3,7,8-TCDD Method 23 3 480 0 Stack Exit 1,2,3,7,8-PeCDD Method 23 3 480 0 Stack Exit 1,2,3,4,7,8-HxCDD Method 23 3 480 0 Stack Exit 1,2,3,6,7,8-HxCDD Method 23 3 480 0 Stack Exit 1,2,3,7,8,9-HxCDD Method 23 3 480 0 Stack Exit



### Sunday, January 30, 2011 Page 2 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 1,2,3,4,6,7,8-HpCDD Method 23 3 480 0 Stack Exit OCDD Method 23 3 480 0 Stack Exit 2,3,7,8-TCDF Method 23 3 480 0 Stack Exit 1,2,3,7,8-PeCDF Method 23 3 480 0 Stack Exit 2,3,4,7,8-PeCDF Method 23 3 480 0 Stack Exit 1,2,3,4,7,8-HxCDF Method 23 3 480 0 Stack Exit 1,2,3,6,7,8-HxCDF Method 23 3 480 0 Stack Exit 2,3,4,6,7,8-HxCDF Method 23 3 480 0 Stack Exit 1,2,3,7,8,9-HxCDF Method 23 3 480 0 Stack Exit 1,2,3,4,6,7,8-HpCDF Method 23 3 480 0 Stack Exit 1,2,3,4,7,8,9-HpCDF Method 23 3 480 0 Stack Exit OCDF Method 23 3 480 0 Stack Exit Other TCDD Method 23 0 Stack Exit Other PeCDD Method 23 0 Stack Exit Other HxCDD Method 23 0 Stack Exit Other HpCDD Method 23 0 Stack Exit Other TCDF Method 23 0 Stack Exit Other PeCDF Method 23 0 Stack Exit Other HxCDF Method 23 0 Stack Exit Other HpCDF Method 23 0 Stack Exit Total Dioxins Method 23 3 480 0 Stack Exit Total Furans Method 23 3 480 0 Stack Exit 3,3',4,4'-TCB (PCB77) Method 23 3 480 0 Stack Exit 3,4,4',5-TCB (PCB81) Method 23 3 480 0 Stack Exit 2,3,3',4,4'-PeCB (PCB105) Method 23 3 480 0 Stack Exit 2,3,4,4',5-PeCB (PCB114) Method 23 3 480 0 Stack Exit 2,3',4,4',5-PeCB (PCB118) Method 23 3 480 0 Stack Exit 2',3,4,4',5-PeCB (PCB123) Method 23 3 480 0 Stack Exit 3,3',4,4',5-PeCB (PCB126) Method 23 3 480 0 Stack Exit 2,3,3',4,4',5/2,3,3',4,4',5'-

HxCB (PCBs156/157) Method 23 3 480 0 Stack Exit
2,3',4,4',5,5'-HxCB (PCB167) Method 23 3 480 0 Stack Exit 3,3',4,4',5,5'-HxCB (PCB169) Method 23 3 480 0 Stack Exit 2,3,3',4,4',5,5'-HpCB

(PCB189) Method 23 3 480 0 Stack Exit
Naphthalene** Method 23 3 480 0 Stack Exit 2-Methylnaphthalene Method 23 3 480 0 Stack Exit Acenaphthylene** Method 23 3 480 0 Stack Exit Acenaphthene** Method 23 3 480 0 Stack Exit Fluorene** Method 23 3 480 0 Stack Exit Phenanthrene** Method 23 3 480 0 Stack Exit Anthracene** Method 23 3 480 0 Stack Exit Fluoranthene** Method 23 3 480 0 Stack Exit Pyrene** Method 23 3 480 0 Stack Exit Benzo(a)Anthracene* Method 23 3 480 0 Stack Exit Chrysene* Method 23 3 480 0 Stack Exit Benzo(b)Fluoranthene* Method 23 3 480 0 Stack Exit Benzo(k)Fluoranthene* Method 23 3 480 0 Stack Exit Benzo(e)Pyrene Method 23 3 480 0 Stack Exit Benzo(a)Pyrene* Method 23 3 480 0 Stack Exit Perylene Method 23 3 480 0 Stack Exit Indeno(1,2,3-cd)Pyrene* Method 23 3 480 0 Stack Exit



### Sunday, January 30, 2011 Page 3 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010

The following describes any modifications and/or deviations to the applicable test methods. If alternative methods were requested, see the attachments for documentation of request AND approval, including dates.

Dibenzo(a,h)Anthracene* Method 23 3 480 0 Stack Exit Benzo(ghi)Perylene** Method 23 3 480 0 Stack Exit Total organic compounds

(TOC) as Methane Method 25A 3 180 0 Stack Exit
Hydrogen Fluoride Method 26A 3 180 0 Stack Exit Hydrogen Chloride Method 26A 3 180 0 Stack Exit Filterable PM2.5 OTM - 27/28 3 240 0 Stack Exit Inorganic (Aqueous)

Condensible Part. OTM - 27/28 3 240 0 Stack Exit
Organic Condensible

Particulate OTM - 27/28 3 240 0 Stack Exit
Beryllium Method 29 3 240 0 Stack Exit Selenium Method 29 3 240 0 Stack Exit Nickel Method 29 3 240 0 Stack Exit Manganese Method 29 3 240 0 Stack Exit Lead Method 29 3 240 0 Stack Exit Antimony Method 29 3 240 0 Stack Exit Arsenic Method 29 3 240 0 Stack Exit Chromium Method 29 3 240 0 Stack Exit Cadmium Method 29 3 240 0 Stack Exit Filterable Particulate Method 29 3 240 0 Stack Exit Cobalt Method 29 3 240 0 Stack Exit Sulfur Dioxide Method 6C 3 180 0 Stack Exit Nitrogen oxides (NOx) Method 7E 3 180 0 Stack Exit



### Sunday, January 30, 2011 Page 4 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 Sampling / Stack Data Results Summary



### Location Stack Exit - Method 0011 Average Run Number 1 2 3
Test Date 4/1/2010 4/1/2010 4/1/2010 Run Start Time Run Finish Time Net Run Time, minutes 120 120 120 Dry Gas Meter Volume Sampled, dscf 88.846 93.648 94.213 92.236 Moisture Content of Stack Gas, % 5.88 5.42 5.56 5.620 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 6.2 6.2 6.2 6.200 Oxygen, % 12.8 12.8 12.8 12.800 Average Stack Gas Temperature, °F 231.67 233.75 234.83 233.417 Dry Volumetric Flow Rate, dry scfm 214,073.9 218,332.0 218,607.8 217,004.567 Actual Wet Volumetric Flue Gas Flow Rate, acfm 298,451.1 303,818.0 305,127.0 302,465.367 Percent Isokinetic of Sampling Rate, % 98.9 102.2 102.7 101.267 F-Factor, dscfm/MMBtu @ %O2 9481 9481 9481 9,481.000
Fw 0 0 0 0.000
Fc 0 0 0 0.000



### Location Stack Exit - Method 10 Average Run Number
Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Fuel Type
Fw
Fc



### Sunday, January 30, 2011 Page 5 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010
Location Stack Exit - Method 23 Average Run Number
Test Date Run Start Time Run Finish Time Net Run Time, minutes Dry Gas Meter Volume Sampled, dscf Moisture Content of Stack Gas, % Moisture Saturation at Stack Gas Temperature, % Carbon Dioxide, % Oxygen, % Average Stack Gas Temperature, °F Dry Volumetric Flow Rate, dry scfm Actual Wet Volumetric Flue Gas Flow Rate, acfm Percent Isokinetic of Sampling Rate, % F-Factor, dscfm/MMBtu @ %O2
Fw
Fc



### Location Stack Exit - Method 25A Average Run Number
Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Fuel Type
Fw
Fc



### Sunday, January 30, 2011 Page 6 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010
Location Stack Exit - Method 26A Average Run Number
Test Date Run Start Time Run Finish Time Net Run Time, minutes Dry Gas Meter Volume Sampled, dscf Moisture Content of Stack Gas, % Moisture Saturation at Stack Gas Temperature, % Carbon Dioxide, % Oxygen, % Average Stack Gas Temperature, °F Dry Volumetric Flow Rate, dry scfm Actual Wet Volumetric Flue Gas Flow Rate, acfm Percent Isokinetic of Sampling Rate, % F-Factor, dscfm/MMBtu @ %O2
Fw
Fc



### Location Stack Exit - Method 29 Average Run Number
Test Date Run Start Time Run Finish Time Net Run Time, minutes Dry Gas Meter Volume Sampled, dscf Moisture Content of Stack Gas, % Moisture Saturation at Stack Gas Temperature, % Carbon Dioxide, % Oxygen, % Average Stack Gas Temperature, °F Dry Volumetric Flow Rate, dry scfm Actual Wet Volumetric Flue Gas Flow Rate, acfm Percent Isokinetic of Sampling Rate, % F-Factor, dscfm/MMBtu @ %O2
Fw
Fc



### Sunday, January 30, 2011 Page 7 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010
Location Stack Exit - Method 6C Average Run Number
Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Fuel Type
Fw
Fc



### Location Stack Exit - Method 7E Average Run Number
Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Fuel Type
Fw
Fc



### Sunday, January 30, 2011 Page 8 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010
Location Stack Exit - OTM - 27/28 Average Run Number
Test Date Run Start Time Run Finish Time Net Run Time, minutes Dry Gas Meter Volume Sampled, dscf Moisture Content of Stack Gas, % Moisture Saturation at Stack Gas Temperature, % Carbon Dioxide, % Oxygen, % Average Stack Gas Temperature, °F Dry Volumetric Flow Rate, dry scfm Actual Wet Volumetric Flue Gas Flow Rate, acfm Percent Isokinetic of Sampling Rate, % F-Factor, dscfm/MMBtu @ %O2
Fw
Fc



### Sunday, January 30, 2011 Page 9 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 Emissions Summary



### Location: Stack Exit - Method 0011 Compound: Formaldehyde Average RunNumber 1 2 3 Mass_mg 0.01 0.019 0.01 0.013 lb/mmBtuO2 6.07E-06 1.09E-05 5.72E-06 0.000 ppm 3.18E-03 5.74E-03 3.00E-03 0.004 ppm@7%O2 5.46E-03 9.85E-03 5.15E-03 0.007



### Location: Stack Exit - Method 10 Compound: Carbon Monoxide Average Run 1 2 3 lb/mmBtuO2 6.57E-04 6.16E-04 8.60E-04 0.001 ppm 3.69E-01 3.47E-01 4.85E-01 0.400 ppm@7%O2 6.33E-01 5.95E-01 8.29E-01 0.686



### Location: Stack Exit - Method 23 Compound: 1,2,3,4,6,7,8-HpCDD Average RunNumber 1 2 3 Mass_mg 0.000000013 0.0000000317 0.0000000071 0.000 lb/mmBtuO2 1.93E-12 4.74E-12 1.06E-12 0.000 ng/dscm 1.27E-03 3.11E-03 6.95E-04 0.002 ng/dscm@7%O2 2.18E-03 5.34E-03 1.19E-03 0.003 

### Compound: 1,2,3,4,6,7,8-HpCDF Average RunNumber 1 2 3 Mass_mg 0.0000000127 0.0000000269 0.00000000504 0.000 lb/mmBtuO2 1.89E-12 4.02E-12 7.54E-13 0.000 ng/dscm 1.24E-03 2.64E-03 4.94E-04 0.001 ng/dscm@7%O2 2.13E-03 4.53E-03 8.48E-04 0.003 

### Compound: 1,2,3,4,7,8,9-HpCDF Average RunNumber 1 2 3 Mass_mg 0.0000000022 0.0000000054 0.0000000012 0.000 lb/mmBtuO2 3.27E-13 8.08E-13 1.79E-13 0.000 ng/dscm 2.14E-04 5.29E-04 1.18E-04 0.000 ng/dscm@7%O2 3.67E-04 9.08E-04 2.02E-04 0.000 

### Compound: 1,2,3,4,7,8-HxCDD Average RunNumber 1 2 3 Mass_mg 0.0000000024 0.0000000048 0.0000000015 0.000 lb/mmBtuO2 3.57E-13 7.18E-13 2.24E-13 0.000 ng/dscm 2.34E-04 4.70E-04 1.47E-04 0.000 ng/dscm@7%O2 4.02E-04 8.07E-04 2.52E-04 0.000



### Sunday, January 30, 2011 Page 10 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 Compound: 1,2,3,4,7,8-HxCDF Average RunNumber 1 2 3 Mass_mg 0.0000000015 0.00000000829 0.0000000033 0.000 lb/mmBtuO2 2.23E-13 1.24E-12 4.94E-13 0.000 ng/dscm 1.46E-04 8.12E-04 3.23E-04 0.000 ng/dscm@7%O2 2.51E-04 1.39E-03 5.54E-04 0.001 

### Compound: 1,2,3,6,7,8-HxCDD Average RunNumber 1 2 3 Mass_mg 0.0000000024 0.0000000047 0.0000000015 0.000 lb/mmBtuO2 3.57E-13 7.03E-13 2.24E-13 0.000 ng/dscm 2.34E-04 4.60E-04 1.47E-04 0.000 ng/dscm@7%O2 4.02E-04 7.89E-04 2.52E-04 0.000 

### Compound: 1,2,3,6,7,8-HxCDF Average RunNumber 1 2 3 Mass_mg 0.0000000028 0.00000000752 0.00000000047 0.000 lb/mmBtuO2 4.17E-13 1.12E-12 7.03E-14 0.000 ng/dscm 2.73E-04 7.37E-04 4.60E-05 0.000 ng/dscm@7%O2 4.68E-04 1.26E-03 7.89E-05 0.001 

### Compound: 1,2,3,7,8,9-HxCDD Average RunNumber 1 2 3 Mass_mg 0.0000000024 0.0000000048 0.0000000015 0.000 lb/mmBtuO2 3.57E-13 7.18E-13 2.24E-13 0.000 ng/dscm 2.34E-04 4.70E-04 1.47E-04 0.000 ng/dscm@7%O2 4.02E-04 8.07E-04 2.52E-04 0.000 

### Compound: 1,2,3,7,8,9-HxCDF Average RunNumber 1 2 3 Mass_mg 0.0000000016 0.000000002 0.0000000025 0.000 lb/mmBtuO2 2.38E-13 2.99E-13 3.74E-13 0.000 ng/dscm 1.56E-04 1.96E-04 2.45E-04 0.000 ng/dscm@7%O2 2.68E-04 3.36E-04 4.20E-04 0.000 

### Compound: 1,2,3,7,8-PeCDD Average RunNumber 1 2 3 Mass_mg 0.0000000016 0.0000000025 0.0000000013 0.000 lb/mmBtuO2 2.38E-13 3.74E-13 1.94E-13 0.000 ng/dscm 1.56E-04 2.45E-04 1.27E-04 0.000 ng/dscm@7%O2 2.68E-04 4.20E-04 2.18E-04 0.000 

### Compound: 1,2,3,7,8-PeCDF Average RunNumber 1 2 3 Mass_mg 0.0000000028 0.0000000054 0.00000000349 0.000 lb/mmBtuO2 4.17E-13 8.08E-13 5.22E-13 0.000



### Sunday, January 30, 2011 Page 11 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 ng/dscm 2.73E-04 5.29E-04 3.42E-04 0.000 ng/dscm@7%O2 4.68E-04 9.08E-04 5.87E-04 0.001 

### Compound: 2,3,3',4,4',5,5'-HpCB (PCB189) Average RunNumber 1 2 3 Mass_mg 0.00000000679 0.0000000078 0.0000000051 0.000 lb/mmBtuO2 1.01E-12 1.17E-12 7.63E-13 0.000 ng/dscm 6.62E-04 7.64E-04 5.00E-04 0.001 ng/dscm@7%O2 1.14E-03 1.31E-03 8.58E-04 0.001 

### Compound: 2,3,3',4,4',5/2,3,3',4,4',5'-HxCB (PC Average RunNumber 1 2 3 Mass_mg 0.0000002537 0.0000002912 0.0000002557 0.000 lb/mmBtuO2 3.78E-11 4.36E-11 3.82E-11 0.000 ng/dscm 2.47E-02 2.85E-02 2.50E-02 0.026 ng/dscm@7%O2 4.24E-02 4.89E-02 4.29E-02 0.045 

### Compound: 2,3,3',4,4'-PeCB (PCB105) Average RunNumber 1 2 3 Mass_mg 0.00000143 0.00000147 0.00000123 0.000 lb/mmBtuO2 2.13E-10 2.20E-10 1.84E-10 0.000 ng/dscm 1.39E-01 1.44E-01 1.20E-01 0.134 ng/dscm@7%O2 2.39E-01 2.47E-01 2.06E-01 0.231 

### Compound: 2,3',4,4',5,5'-HxCB (PCB167) Average RunNumber 1 2 3 Mass_mg 0.000000107 0.000000113 0.000000086 0.000 lb/mmBtuO2 1.59E-11 1.69E-11 1.29E-11 0.000 ng/dscm 1.04E-02 1.11E-02 8.42E-03 0.010 ng/dscm@7%O2 1.78E-02 1.90E-02 1.44E-02 0.017 

### Compound: 2,3,4,4',5-PeCB (PCB114) Average RunNumber 1 2 3 Mass_mg 0.000000118 0.000000146 0.0000000997 0.000 lb/mmBtuO2 1.76E-11 2.18E-11 1.49E-11 0.000 ng/dscm 1.15E-02 1.43E-02 9.77E-03 0.012 ng/dscm@7%O2 1.97E-02 2.45E-02 1.68E-02 0.020 

### Compound: 2,3',4,4',5-PeCB (PCB118) Average RunNumber 1 2 3 Mass_mg 0.00000443 0.00000465 0.00000403 0.000 lb/mmBtuO2 6.59E-10 6.96E-10 6.03E-10 0.000 ng/dscm 4.32E-01 4.56E-01 3.95E-01 0.428 ng/dscm@7%O2 7.41E-01 7.83E-01 6.78E-01 0.734 

### Compound: 2',3,4,4',5-PeCB (PCB123) Average RunNumber 1 2 3


### Sunday, January 30, 2011 Page 12 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 Mass_mg 0.0000000779 0.0000000786 0.0000000593 0.000 lb/mmBtuO2 1.16E-11 1.18E-11 8.87E-12 0.000 ng/dscm 7.59E-03 7.70E-03 5.81E-03 0.007 ng/dscm@7%O2 1.30E-02 1.32E-02 9.97E-03 0.012 

### Compound: 2,3,4,6,7,8-HxCDF Average RunNumber 1 2 3 Mass_mg 0.0000000015 0.000000009 0.00000000383 0.000 lb/mmBtuO2 2.23E-13 1.35E-12 5.73E-13 0.000 ng/dscm 1.46E-04 8.82E-04 3.75E-04 0.000 ng/dscm@7%O2 2.51E-04 1.51E-03 6.44E-04 0.001 

### Compound: 2,3,4,7,8-PeCDF Average RunNumber 1 2 3 Mass_mg 0.000000002 0.0000000097 0.00000000525 0.000 lb/mmBtuO2 2.98E-13 1.45E-12 7.85E-13 0.000 ng/dscm 1.95E-04 9.50E-04 5.14E-04 0.001 ng/dscm@7%O2 3.35E-04 1.63E-03 8.82E-04 0.001 

### Compound: 2,3,7,8-TCDD Average RunNumber 1 2 3 Mass_mg 0.0000000024 0.0000000029 0.0000000025 0.000 lb/mmBtuO2 3.57E-13 4.34E-13 3.74E-13 0.000 ng/dscm 2.34E-04 2.84E-04 2.45E-04 0.000 ng/dscm@7%O2 4.02E-04 4.87E-04 4.20E-04 0.000 

### Compound: 2,3,7,8-TCDF Average RunNumber 1 2 3 Mass_mg 0.0000000029 0.0000000033 0.0000000014 0.000 lb/mmBtuO2 4.32E-13 4.94E-13 2.09E-13 0.000 ng/dscm 2.83E-04 3.23E-04 1.37E-04 0.000 ng/dscm@7%O2 4.86E-04 5.54E-04 2.35E-04 0.000 

### Compound: 2-Methylnaphthalene Average RunNumber 1 2 3 Mass_mg 0.00206 0.000868 0.0011 0.001 lb/mmBtuO2 3.07E-07 1.30E-07 1.65E-07 0.000 ng/dscm 2.01E+02 8.50E+01 1.08E+02 131.333 ng/dscm@7%O2 3.45E+02 1.46E+02 1.85E+02 225.333 

### Compound: 3,3',4,4',5,5'-HxCB (PCB169) Average RunNumber 1 2 3 Mass_mg 0.00000000099 0.00000000051 0.0000000011 0.000 lb/mmBtuO2 1.47E-13 7.63E-14 1.65E-13 0.000 ng/dscm 9.65E-05 5.00E-05 1.08E-04 0.000 ng/dscm@7%O2 1.66E-04 8.58E-05 1.85E-04 0.000



### Sunday, January 30, 2011 Page 13 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 Compound: 3,3',4,4',5-PeCB (PCB126) Average RunNumber 1 2 3 Mass_mg 0.00000001 0.00000001 0.0000000038 0.000 lb/mmBtuO2 1.49E-12 1.50E-12 5.68E-13 0.000 ng/dscm 9.75E-04 9.80E-04 3.72E-04 0.001 ng/dscm@7%O2 1.67E-03 1.68E-03 6.38E-04 0.001 

### Compound: 3,3',4,4'-TCB (PCB77) Average RunNumber 1 2 3 Mass_mg 0.000000142 0.000000189 0.0000000565 0.000 lb/mmBtuO2 2.11E-11 2.83E-11 8.45E-12 0.000 ng/dscm 1.38E-02 1.85E-02 5.53E-03 0.013 ng/dscm@7%O2 2.37E-02 3.17E-02 9.49E-03 0.022 

### Compound: 3,4,4',5-TCB (PCB81) Average RunNumber 1 2 3 Mass_mg 0.0000000078 0.0000000113 0.00000000311 0.000 lb/mmBtuO2 1.16E-12 1.69E-12 4.65E-13 0.000 ng/dscm 7.60E-04 1.11E-03 3.05E-04 0.001 ng/dscm@7%O2 1.30E-03 1.90E-03 5.23E-04 0.001 

### Compound: Acenaphthene** Average RunNumber 1 2 3 Mass_mg 0.0000599 0.0000965 0.00000904 0.000 lb/mmBtuO2 8.91E-09 1.44E-08 1.35E-09 0.000 ng/dscm 5.84E+00 9.45E+00 8.86E-01 5.392 ng/dscm@7%O2 1.00E+01 1.62E+01 1.52E+00 9.240 

### Compound: Acenaphthylene** Average RunNumber 1 2 3 Mass_mg 0.000016 0.000033 0.0000019 0.000 lb/mmBtuO2 2.38E-09 4.94E-09 2.84E-10 0.000 ng/dscm 1.56E+00 3.23E+00 1.86E-01 1.659 ng/dscm@7%O2 2.68E+00 5.54E+00 3.19E-01 2.846 

### Compound: Anthracene** Average RunNumber 1 2 3 Mass_mg 0.000011 0.000041 0.000019 0.000 lb/mmBtuO2 1.64E-09 6.13E-09 2.84E-09 0.000 ng/dscm 1.07E+00 4.02E+00 1.86E+00 2.317 ng/dscm@7%O2 1.84E+00 6.90E+00 3.19E+00 3.977 

### Compound: Benzo(a)Anthracene* Average RunNumber 1 2 3 Mass_mg 0.0000148 0.0000105 0.0000016 0.000 lb/mmBtuO2 2.20E-09 1.57E-09 2.39E-10 0.000



### Sunday, January 30, 2011 Page 14 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 ng/dscm 1.44E+00 1.03E+00 1.57E-01 0.876 ng/dscm@7%O2 2.47E+00 1.77E+00 2.69E-01 1.503 

### Compound: Benzo(a)Pyrene* Average RunNumber 1 2 3 Mass_mg 0.00000549 0.00000463 0.000000524 0.000 lb/mmBtuO2 8.17E-10 6.93E-10 7.84E-11 0.000 ng/dscm 5.35E-01 4.54E-01 5.13E-02 0.347 ng/dscm@7%O2 9.18E-01 7.79E-01 8.80E-02 0.595 

### Compound: Benzo(b)Fluoranthene* Average RunNumber 1 2 3 Mass_mg 0.0000238 0.0000157 0.00000476 0.000 lb/mmBtuO2 3.54E-09 2.35E-09 7.12E-10 0.000 ng/dscm 2.32E+00 1.54E+00 4.66E-01 1.442 ng/dscm@7%O2 3.98E+00 2.64E+00 8.00E-01 2.473 

### Compound: Benzo(e)Pyrene Average RunNumber 1 2 3 Mass_mg 0.0000123 0.00000593 0.00000159 0.000 lb/mmBtuO2 1.83E-09 8.87E-10 2.38E-10 0.000 ng/dscm 1.20E+00 5.81E-01 1.56E-01 0.646 ng/dscm@7%O2 2.06E+00 9.97E-01 2.68E-01 1.108 

### Compound: Benzo(ghi)Perylene** Average RunNumber 1 2 3 Mass_mg 0.00000262 0.00000148 0.000000643 0.000 lb/mmBtuO2 3.90E-10 2.21E-10 9.62E-11 0.000 ng/dscm 2.55E-01 1.45E-01 6.30E-02 0.154 ng/dscm@7%O2 4.38E-01 2.49E-01 1.08E-01 0.265 

### Compound: Benzo(k)Fluoranthene* Average RunNumber 1 2 3 Mass_mg 0.000013 0.00000423 0.000000978 0.000 lb/mmBtuO2 1.93E-09 6.33E-10 1.46E-10 0.000 ng/dscm 1.27E+00 4.14E-01 9.58E-02 0.593 ng/dscm@7%O2 2.18E+00 7.10E-01 1.64E-01 1.018 

### Compound: Chrysene* Average RunNumber 1 2 3 Mass_mg 0.0000969 0.000062 0.0000325 0.000 lb/mmBtuO2 1.44E-08 9.27E-09 4.86E-09 0.000 ng/dscm 9.44E+00 6.07E+00 3.18E+00 6.230 ng/dscm@7%O2 1.62E+01 1.04E+01 5.46E+00 10.687 

### Compound: Dibenzo(a,h)Anthracene* Average RunNumber 1 2 3


### Sunday, January 30, 2011 Page 15 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 Mass_mg 0.00000074 0.000000814 0.00000085 0.000 lb/mmBtuO2 1.10E-10 1.22E-10 1.27E-10 0.000 ng/dscm 7.21E-02 7.97E-02 8.33E-02 0.078 ng/dscm@7%O2 1.24E-01 1.37E-01 1.43E-01 0.135 

### Compound: Fluoranthene** Average RunNumber 1 2 3 Mass_mg 0.000285 0.000257 0.0000688 0.000 lb/mmBtuO2 4.24E-08 3.84E-08 1.03E-08 0.000 ng/dscm 2.78E+01 2.52E+01 6.74E+00 19.913 ng/dscm@7%O2 4.77E+01 4.32E+01 1.16E+01 34.167 

### Compound: Fluorene** Average RunNumber 1 2 3 Mass_mg 0.000216 0.000205 0.0000508 0.000 lb/mmBtuO2 3.21E-08 3.07E-08 7.60E-09 0.000 ng/dscm 2.11E+01 2.01E+01 4.98E+00 15.393 ng/dscm@7%O2 3.62E+01 3.45E+01 8.55E+00 26.417 

### Compound: Indeno(1,2,3-cd)Pyrene* Average RunNumber 1 2 3 Mass_mg 0.00000298 0.00000191 0.00000097 0.000 lb/mmBtuO2 4.43E-10 2.86E-10 1.45E-10 0.000 ng/dscm 2.90E-01 1.87E-01 9.50E-02 0.191 ng/dscm@7%O2 4.98E-01 3.21E-01 1.63E-01 0.327 

### Compound: Naphthalene** Average RunNumber 1 2 3 Mass_mg 0.0035 0.00213 0.00239 0.003 lb/mmBtuO2 5.21E-07 3.19E-07 3.57E-07 0.000 ng/dscm 3.41E+02 2.09E+02 2.34E+02 261.333 ng/dscm@7%O2 5.85E+02 3.59E+02 4.02E+02 448.667 

### Compound: OCDD Average RunNumber 1 2 3 Mass_mg 0.000000025 0.0000000592 0.0000000182 0.000 lb/mmBtuO2 3.72E-12 8.86E-12 2.72E-12 0.000 ng/dscm 2.44E-03 5.80E-03 1.78E-03 0.003 ng/dscm@7%O2 4.19E-03 9.95E-03 3.05E-03 0.006 

### Compound: OCDF Average RunNumber 1 2 3 Mass_mg 0.0000000106 0.0000000059 0.00000001 0.000 lb/mmBtuO2 1.58E-12 8.83E-13 1.50E-12 0.000 ng/dscm 1.03E-03 5.78E-04 9.80E-04 0.001 ng/dscm@7%O2 1.77E-03 9.92E-04 1.68E-03 0.001



### Sunday, January 30, 2011 Page 16 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 Compound: Other HpCDD Average RunNumber 1 2 3 Mass_mg 0 0.0000000403 0 0.000 lb/mmBtuO2 0.00E+00 6.03E-12 0.00E+00 0.000 ng/dscm 0.00E+00 3.95E-03 0.00E+00 0.001 ng/dscm@7%O2 0.00E+00 6.78E-03 0.00E+00 0.002 

### Compound: Other HpCDF Average RunNumber 1 2 3 Mass_mg 0 0.0000000047 0 0.000 lb/mmBtuO2 0.00E+00 7.03E-13 0.00E+00 0.000 ng/dscm 0.00E+00 4.60E-04 0.00E+00 0.000 ng/dscm@7%O2 0.00E+00 7.89E-04 0.00E+00 0.000 

### Compound: Other HxCDD Average RunNumber 1 2 3 Mass_mg 0.0000000147 0 0.00000000863 0.000 lb/mmBtuO2 2.19E-12 0.00E+00 1.29E-12 0.000 ng/dscm 1.43E-03 0.00E+00 8.45E-04 0.001 ng/dscm@7%O2 2.45E-03 0.00E+00 1.45E-03 0.001 

### Compound: Other HxCDF Average RunNumber 1 2 3 Mass_mg 0 0.00000002539 0 0.000 lb/mmBtuO2 0.00E+00 3.80E-12 0.00E+00 0.000 ng/dscm 0.00E+00 2.49E-03 0.00E+00 0.001 ng/dscm@7%O2 0.00E+00 4.27E-03 0.00E+00 0.001 

### Compound: Other PeCDD Average RunNumber 1 2 3 Mass_mg 0 0.0000000354 0 0.000 lb/mmBtuO2 0.00E+00 5.30E-12 0.00E+00 0.000 ng/dscm 0.00E+00 3.47E-03 0.00E+00 0.001 ng/dscm@7%O2 0.00E+00 5.95E-03 0.00E+00 0.002 

### Compound: Other PeCDF Average RunNumber 1 2 3 Mass_mg 0.00000000287 0.0000000113 0.00000000536 0.000 lb/mmBtuO2 4.27E-13 1.69E-12 8.02E-13 0.000 ng/dscm 2.80E-04 1.11E-03 5.25E-04 0.001 ng/dscm@7%O2 4.80E-04 1.90E-03 9.01E-04 0.001 

### Compound: Other TCDD Average RunNumber 1 2 3 Mass_mg 0.0000000135 0.0000000143 0 0.000 lb/mmBtuO2 2.01E-12 2.14E-12 0.00E+00 0.000



### Sunday, January 30, 2011 Page 17 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 ng/dscm 1.32E-03 1.40E-03 0.00E+00 0.001 ng/dscm@7%O2 2.27E-03 2.40E-03 0.00E+00 0.002 

### Compound: Other TCDF Average RunNumber 1 2 3 Mass_mg 0 0 0 0.000 lb/mmBtuO2 0.00E+00 0.00E+00 0.00E+00 0.000 ng/dscm 0.00E+00 0.00E+00 0.00E+00 0.000 ng/dscm@7%O2 0.00E+00 0.00E+00 0.00E+00 0.000 

### Compound: Perylene Average RunNumber 1 2 3 Mass_mg 0.00000034 0.00000119 0.000000384 0.000 lb/mmBtuO2 5.06E-11 1.78E-10 5.74E-11 0.000 ng/dscm 3.31E-02 1.17E-01 3.76E-02 0.063 ng/dscm@7%O2 5.68E-02 2.01E-01 6.45E-02 0.107 

### Compound: Phenanthrene** Average RunNumber 1 2 3 Mass_mg 0.0036 0.00218 0.00116 0.002 lb/mmBtuO2 5.36E-07 3.26E-07 1.74E-07 0.000 ng/dscm 3.51E+02 2.14E+02 1.14E+02 226.333 ng/dscm@7%O2 6.02E+02 3.67E+02 1.96E+02 388.333 

### Compound: Pyrene** Average RunNumber 1 2 3 Mass_mg 0.000152 0.000149 0.0000223 0.000 lb/mmBtuO2 2.26E-08 2.23E-08 3.34E-09 0.000 ng/dscm 1.48E+01 1.46E+01 2.18E+00 10.527 ng/dscm@7%O2 2.54E+01 2.51E+01 3.74E+00 18.080 

### Compound: Total Dioxins Average RunNumber 1 2 3 Mass_mg 0.0000000774 0.0000002006 0.00000004223 0.000 lb/mmBtuO2 1.15E-11 3.00E-11 6.32E-12 0.000 ng/dscm 7.54E-03 1.97E-02 4.14E-03 0.010 ng/dscm@7%O2 1.29E-02 3.38E-02 7.10E-03 0.018 

### Compound: Total Furans Average RunNumber 1 2 3 Mass_mg 0.00000004347 0.0000001248 0.00000004184 0.000 lb/mmBtuO2 6.47E-12 1.87E-11 6.26E-12 0.000 ng/dscm 4.24E-03 1.22E-02 4.10E-03 0.007 ng/dscm@7%O2 7.28E-03 2.09E-02 7.04E-03 0.012



### Location: Stack Exit - Method 25A



### Sunday, January 30, 2011 Page 18 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 Compound: Total organic compounds (TOC) as Average Run 1 2 3 lb/mmBtuO2 1.23E-03 8.79E-04 6.55E-04 0.001 ppm 1.21E+00 8.64E-01 6.45E-01 0.906 ppm@7%O2 2.08E+00 1.48E+00 1.10E+00 1.553



### Location: Stack Exit - Method 26A Compound: Hydrogen Chloride Average RunNumber 1 2 3 Mass_mg 3.8 3.8 3.8 3.800 lb/mmBtuO2 1.45E-03 1.43E-03 1.46E-03 0.001 

### Compound: Hydrogen Fluoride Average RunNumber 1 2 3 Mass_mg 0.36 0.31 0.32 0.330 lb/mmBtuO2 1.37E-04 1.17E-04 1.23E-04 0.000



### Location: Stack Exit - Method 29 Compound: Antimony Average RunNumber 1 2 3 Mass_mg 0.00284 0.0055925 0.0021975 0.004 lb/mmBtuO2 8.38E-07 1.71E-06 6.41E-07 0.000 

### Compound: Arsenic Average RunNumber 1 2 3 Mass_mg 0.001528 0.0047075 0.0009925 0.002 lb/mmBtuO2 4.51E-07 1.44E-06 2.90E-07 0.000 

### Compound: Beryllium Average RunNumber 1 2 3 Mass_mg 0.000274 0.0002325 0.000105 0.000 lb/mmBtuO2 8.09E-08 7.09E-08 3.06E-08 0.000 

### Compound: Cadmium Average RunNumber 1 2 3 Mass_mg 0.00077 0.00162 0.00098 0.001 lb/mmBtuO2 2.27E-07 4.94E-07 2.86E-07 0.000 

### Compound: Chromium Average RunNumber 1 2 3 Mass_mg 0.0055475 0.01254 0.007 0.008 lb/mmBtuO2 1.64E-06 3.82E-06 2.04E-06 0.000



### Sunday, January 30, 2011 Page 19 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 Compound: Cobalt Average RunNumber 1 2 3 Mass_mg 0.0024825 0.00607 0.002125 0.004 lb/mmBtuO2 7.33E-07 1.85E-06 6.20E-07 0.000 

### Compound: Filterable Particulate Average RunNumber 1 2 3 Mass_mg 4.2 6.7 4.9 5.267 lb/mmBtuO2 1.24E-03 2.04E-03 1.43E-03 0.002 

### Compound: Lead Average RunNumber 1 2 3 Mass_mg 0.00881 0.05731 0.01131 0.026 lb/mmBtuO2 2.60E-06 1.75E-05 3.30E-06 0.000 

### Compound: Manganese Average RunNumber 1 2 3 Mass_mg 0.0124 0.0246 0.0171 0.018 lb/mmBtuO2 3.66E-06 7.50E-06 4.99E-06 0.000 

### Compound: Nickel Average RunNumber 1 2 3 Mass_mg 0.043125 0.108065 0.033255 0.061 lb/mmBtuO2 1.27E-05 3.30E-05 9.70E-06 0.000 

### Compound: Selenium Average RunNumber 1 2 3 Mass_mg 0.001068 0.0085 0.0022305 0.004 lb/mmBtuO2 3.15E-07 2.59E-06 6.51E-07 0.000



### Location: Stack Exit - Method 6C Compound: Sulfur Dioxide Average Run 1 2 3 lb/mmBtuO2 2.85E-01 2.75E-01 2.78E-01 0.279 ppm 7.01E+01 6.76E+01 6.85E+01 68.733 ppm@7%O2 1.20E+02 1.16E+02 1.17E+02 117.667



### Location: Stack Exit - Method 7E Compound: Nitrogen oxides (NOx) Average Run 1 2 3 lb/mmBtuO2 1.55E-01 1.65E-01 1.65E-01 0.162 ppm 5.32E+01 5.65E+01 5.66E+01 55.433 ppm@7%O2 9.13E+01 9.68E+01 9.68E+01 94.967



### Sunday, January 30, 2011 Page 20 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010

Process Run Data Location: Stack Exit - OTM - 27/28 

### Compound: Filterable PM2.5 Average RunNumber 1 2 3 Mass_mg 1.3 2.3 1.4 1.667 lb/mmBtuO2 5.89E-04 1.07E-03 6.59E-04 0.001 

### Compound: Inorganic (Aqueous) Condensible Pa Average RunNumber 1 2 3 Mass_mg 3.9 5.1 5.4 4.800 lb/mmBtuO2 1.77E-03 2.37E-03 2.54E-03 0.002 

### Compound: Organic Condensible Particulate Average RunNumber 1 2 3 Mass_mg 0.9 1 1 0.967 lb/mmBtuO2 4.08E-04 4.65E-04 4.71E-04 0.000



### Sunday, January 30, 2011 Page 21 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 Process Run Data



### Run Name Value UOM Comments Target Value 1 Heat Input 487.27 Million Btus/hr Collected during M29 run 1 0



### 10 Heat Input 489.16 Million Btus/hr Collected during M23 run 1 0

11 Heat Input 524.39 Million Btus/hr Collected during M23 run 2 0



### 12 Heat Input 535.74 Million Btus/hr Collected during M23 run 3 0

13 Heat Input 524.79 Million Btus/hr Collected during M0011 run 1 0

14 Heat Input 507.75 Million Btus/hr Collected during M0011 run 2 0



### 15 Heat Input 530.03 Million Btus/hr Collected during M0011 run 3 0

16 Heat Input 535.32 Million Btus/hr Collected during M26A run 1 0



### 17 Heat Input 531.9 Million Btus/hr Collected during M26A run 2 0

18 Heat Input 540.44 Million Btus/hr Collected during M26A run 3 0



### 2 Heat Input 492.45 Million Btus/hr Collected during M29 run 2 0

3 Heat Input 529.02 Million Btus/hr Collected during M29 run 3 0



### 4 Heat Input 486.51 Million Btus/hr Collected during OTM-27/28 run 1 0

5 Heat Input 513.61 Million Btus/hr Collected during OTM-27/28 run 2 0



### 6 Heat Input 533.59 Million Btus/hr Collected during OTM-27/28 run 3 0

7 Heat Input 530.3 Million Btus/hr Collected during run 1 of Method 6C, 7E, 10, and 25A 0

8 Heat Input 532.2 Million Btus/hr Collected during run 2 of Method 6C, 7E, 10, and 25A 0

9 Heat Input 535.32 Million Btus/hr Collected during run 3 of Method 6C, 7E, 10, and 25A 0



### Sunday, January 30, 2011 Page 22 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 1 Steam Output 373500 lb steam/hr Collected during M29 run 1 0



### 10 Steam Output 373500 lb steam/hr Collected during M23 run 1 0

11 Steam Output 373500 lb steam/hr Collected during M23 run 2 0

12 Steam Output 373500 lb steam/hr Collected during M23 run 3 0



### 13 Steam Output 373500 lb steam/hr Collected during M0011 run 1 0

14 Steam Output 373500 lb steam/hr Collected during M0011 run 2 0



### 15 Steam Output 373500 lb steam/hr Collected during M0011 run 3 0

16 Steam Output 373500 lb steam/hr Collected during M26A run 1 0



### 17 Steam Output 373500 lb steam/hr Collected during M26A run 2 0

18 Steam Output 373500 lb steam/hr Collected during M26A run 3 0



### 2 Steam Output 373500 lb steam/hr Collected during M29 run 2 0

3 Steam Output 373500 lb steam/hr Collected during M29 run 3 0



### 4 Steam Output 373500 lb steam/hr Collected during OTM-27/28 run 1 0

5 Steam Output 373500 lb steam/hr Collected during OTM-27/28 run 2 0



### 6 Steam Output 373500 lb steam/hr Collected during OTM-27/28 run 3 0

7 Steam Output 373500 lb steam/hr Collected during run 1 of Method 6C, 7E, 10, and 25A 0

8 Steam Output 373500 lb steam/hr Collected during run 2 of Method 6C, 7E, 10, and 25A 0

9 Steam Output 373500 lb steam/hr Collected during run 3 of Method 6C, 7E, 10, and 25A 0

1 Fuel Oil Firing Rate 2868.9 gal/hr Collected during M29 run 1 0



### 10 Fuel Oil Firing Rate 2868.9 gal/hr Collected during M23 run 1 0

Sunday, January 30, 2011 Page 23 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 11 Fuel Oil Firing Rate 2868.9 gal/hr Collected during M23 run 2 0



### 12 Fuel Oil Firing Rate 2868.9 gal/hr Collected during M23 run 3 0

13 Fuel Oil Firing Rate 2868.9 gal/hr Collected during M0011 run 1 0

14 Fuel Oil Firing Rate 2868.9 gal/hr Collected during M0011 run 2 0



### 15 Fuel Oil Firing Rate 2868.9 gal/hr Collected during M0011 run 3 0

16 Fuel Oil Firing Rate 2868.9 gal/hr Collected during M26A run 1 0



### 17 Fuel Oil Firing Rate 2868.9 gal/hr Collected during M26A run 2 0

18 Fuel Oil Firing Rate 2868.9 gal/hr Collected during M26A run 3 0



### 2 Fuel Oil Firing Rate 2868.9 gal/hr Collected during M29 run 2 0

3 Fuel Oil Firing Rate 2868.9 gal/hr Collected during M29 run 3 0



### 4 Fuel Oil Firing Rate 2868.9 gal/hr Collected during OTM-27/28 run 1 0

5 Fuel Oil Firing Rate 2868.9 gal/hr Collected during OTM-27/28 run 2 0



### 6 Fuel Oil Firing Rate 2868.9 gal/hr Collected during OTM-27/28 run 3 0

7 Fuel Oil Firing Rate 2868.9 gal/hr Collected during run 1 of Method 6C, 7E, 10, and 25A 0

8 Fuel Oil Firing Rate 2868.9 gal/hr Collected during run 2 of Method 6C, 7E, 10, and 25A 0

9 Fuel Oil Firing Rate 2868.9 gal/hr Collected during run 3 of Method 6C, 7E, 10, and 25A 0

1 Urea Injection 8.4 gal/hr Collected during M29 run 1 0



### 10 Urea Injection 8.4 gal/hr Collected during M23 run 1 0

11 Urea Injection 8.4 gal/hr Collected during M23 run 2 0



### 12 Urea Injection 8.4 gal/hr Collected during M23 run 3 0

Sunday, January 30, 2011 Page 24 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 13 Urea Injection 8.4 gal/hr Collected during M0011 run 1 0



### 14 Urea Injection 8.4 gal/hr Collected during M0011 run 2 0

15 Urea Injection 8.4 gal/hr Collected during M0011 run 3 0

16 Urea Injection 8.4 gal/hr Collected during M26A run 1 0



### 17 Urea Injection 8.4 gal/hr Collected during M26A run 2 0

18 Urea Injection 8.4 gal/hr Collected during M26A run 3 0



### 2 Urea Injection 8.4 gal/hr Collected during M29 run 2 0

3 Urea Injection 8.4 gal/hr Collected during M29 run 3 0



### 4 Urea Injection 8.4 gal/hr Collected during OTM-27/28 run 1 0

5 Urea Injection 8.4 gal/hr Collected during OTM-27/28 run 2 0



### 6 Urea Injection 8.4 gal/hr Collected during OTM-27/28 run 3 0

7 Urea Injection 8.4 gal/hr Collected during run 1 of Method 6C, 7E, 10, and 25A 0

8 Urea Injection 8.4 gal/hr Collected during run 2 of Method 6C, 7E, 10, and 25A 0

9 Urea Injection 8.4 gal/hr Collected during run 3 of Method 6C, 7E, 10, and 25A 0

1 HFO guns in service 8 guns Collected during M29 run 1 0



### 10 HFO guns in service 8 guns Collected during M23 run 1 0

11 HFO guns in service 8 guns Collected during M23 run 2 0



### 12 HFO guns in service 8 guns Collected during M23 run 3 0

13 HFO guns in service 8 guns Collected during M0011 run 1 0



### 14 HFO guns in service 8 guns Collected during M0011 run 2 0

Sunday, January 30, 2011 Page 25 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 15 HFO guns in service 8 guns Collected during M0011 run 3 0



### 16 HFO guns in service 8 guns Collected during M26A run 1 0

17 HFO guns in service 8 guns Collected during M26A run 2 0

18 HFO guns in service 8 guns Collected during M26A run 3 0



### 2 HFO guns in service 8 guns Collected during M29 run 2 0

3 HFO guns in service 8 guns Collected during M29 run 3 0



### 4 HFO guns in service 8 guns Collected during OTM-27/28 run 1 0

5 HFO guns in service 8 guns Collected during OTM-27/28 run 2 0



### 6 HFO guns in service 8 guns Collected during OTM-27/28 run 3 0

7 HFO guns in service 8 guns Collected during run 1 of Method 6C, 7E, 10, and 25A 0

8 HFO guns in service 8 guns Collected during run 2 of Method 6C, 7E, 10, and 25A 0

9 HFO guns in service 8 guns Collected during run 3 of Method 6C, 7E, 10, and 25A 0

1 Flue Gas Oxygen Content 7.7 % Collected during M29 run 1 0



### 10 Flue Gas Oxygen Content 7.7 % Collected during M23 run 1 0

11 Flue Gas Oxygen Content 7.7 % Collected during M23 run 2 0



### 12 Flue Gas Oxygen Content 7.7 % Collected during M23 run 3 0

13 Flue Gas Oxygen Content 7.7 % Collected during M0011 run 1 0



### 14 Flue Gas Oxygen Content 7.7 % Collected during M0011 run 2 0

15 Flue Gas Oxygen Content 7.7 % Collected during M0011 run 3 0



### 16 Flue Gas Oxygen Content 7.7 % Collected during M26A run 1 0

Sunday, January 30, 2011 Page 26 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 17 Flue Gas Oxygen Content 7.7 % Collected during M26A run 2 0



### 18 Flue Gas Oxygen Content 7.7 % Collected during M26A run 3 0

2 Flue Gas Oxygen Content 7.7 % Collected during M29 run 2 0

3 Flue Gas Oxygen Content 7.7 % Collected during M29 run 3 0



### 4 Flue Gas Oxygen Content 7.7 % Collected during OTM-27/28 run 1 0

5 Flue Gas Oxygen Content 7.7 % Collected during OTM-27/28 run 2 0



### 6 Flue Gas Oxygen Content 7.7 % Collected during OTM-27/28 run 3 0

7 Flue Gas Oxygen Content 7.7 % Collected during run 1 of Method 6C, 7E, 10, and 25A 0

8 Flue Gas Oxygen Content 7.7 % Collected during run 2 of Method 6C, 7E, 10, and 25A 0

9 Flue Gas Oxygen Content 7.7 % Collected during run 3 of Method 6C, 7E, 10, and 25A 0

1 Flue Gas Flow Rate 1E+07 SCFH Collected during M29 run 1 0



### 10 Flue Gas Flow Rate 1E+07 SCFH Collected during M23 run 1 0

11 Flue Gas Flow Rate 1E+07 SCFH Collected during M23 run 2 0



### 12 Flue Gas Flow Rate 1E+07 SCFH Collected during M23 run 3 0

13 Flue Gas Flow Rate 1E+07 SCFH Collected during M0011 run 1 0



### 14 Flue Gas Flow Rate 1E+07 SCFH Collected during M0011 run 2 0

15 Flue Gas Flow Rate 1E+07 SCFH Collected during M0011 run 3 0



### 16 Flue Gas Flow Rate 1E+07 SCFH Collected during M26A run 1 0

17 Flue Gas Flow Rate 1E+07 SCFH Collected during M26A run 2 0



### 18 Flue Gas Flow Rate 1E+07 SCFH Collected during M26A run 3 0

Sunday, January 30, 2011 Page 27 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 2 Flue Gas Flow Rate 1E+07 SCFH Collected during M29 run 2 0



### 3 Flue Gas Flow Rate 1E+07 SCFH Collected during M29 run 3 0

4 Flue Gas Flow Rate 1E+07 SCFH Collected during OTM-27/28 run 1 0

5 Flue Gas Flow Rate 1E+07 SCFH Collected during OTM-27/28 run 2 0



### 6 Flue Gas Flow Rate 1E+07 SCFH Collected during OTM-27/28 run 3 0

7 Flue Gas Flow Rate 1E+07 SCFH Collected during run 1 of Method 6C, 7E, 10, and 25A 0

8 Flue Gas Flow Rate 1E+07 SCFH Collected during run 2 of Method 6C, 7E, 10, and 25A 0

9 Flue Gas Flow Rate 1E+07 SCFH Collected during run 3 of Method 6C, 7E, 10, and 25A 0

1 Unit Gross Electrical Output 45 MW Collected during M29 run 1 0



### 10 Unit Gross Electrical Output 44.75 MW Collected during M23 run 1 0

11 Unit Gross Electrical Output 45.13 MW Collected during M23 run 2 0



### 12 Unit Gross Electrical Output 45 MW Collected during M23 run 3 0

13 Unit Gross Electrical Output 45 MW Collected during M0011 run 1 0



### 14 Unit Gross Electrical Output 45 MW Collected during M0011 run 2 0

15 Unit Gross Electrical Output 45 MW Collected during M0011 run 3 0



### 16 Unit Gross Electrical Output 45.67 MW Collected during M26A run 1 0

17 Unit Gross Electrical Output 45 MW Collected during M26A run 2 0



### 18 Unit Gross Electrical Output 45 MW Collected during M26A run 3 0

2 Unit Gross Electrical Output 44.4 MW Collected during M29 run 2 0



### 3 Unit Gross Electrical Output 45 MW Collected during M29 run 3 0

Sunday, January 30, 2011 Page 28 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 4 Unit Gross Electrical Output 44.67 MW Collected during OTM-27/28 run 1 0



### 5 Unit Gross Electrical Output 44.83 MW Collected during OTM-27/28 run 2 0

6 Unit Gross Electrical Output 45.33 MW Collected during OTM-27/28 run 3 0

7 Unit Gross Electrical Output 45 MW Collected during run 1 of Method 6C, 7E, 10, and 25A 0

8 Unit Gross Electrical Output 45 MW Collected during run 2 of Method 6C, 7E, 10, and 25A 0



### 9 Unit Gross Electrical Output 45.67 MW Collected during run 3 of Method 6C, 7E, 10, and 25A 0

1 Unit Net Electric Generation 40 MW Collected during M29 run 1 0

10 Unit Net Electric Generation 39.75 MW Collected during M23 run 1 0

11 Unit Net Electric Generation 40.13 MW Collected during M23 run 2 0



### 12 Unit Net Electric Generation 40 MW Collected during M23 run 3 0

13 Unit Net Electric Generation 40 MW Collected during M0011 run 1 0



### 14 Unit Net Electric Generation 40 MW Collected during M0011 run 2 0

15 Unit Net Electric Generation 40 MW Collected during M0011 run 3 0



### 16 Unit Net Electric Generation 40.67 MW Collected during M26A run 1 0

17 Unit Net Electric Generation 40 MW Collected during M26A run 2 0



### 18 Unit Net Electric Generation 40 MW Collected during M26A run 3 0

2 Unit Net Electric Generation 39.4 MW Collected during M29 run 2 0



### 3 Unit Net Electric Generation 40 MW Collected during M29 run 3 0

4 Unit Net Electric Generation 39.67 MW Collected during OTM-27/28 run 1 0



### 5 Unit Net Electric Generation 39.83 MW Collected during OTM-27/28 run 2 0

Sunday, January 30, 2011 Page 29 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010

APCD Run Data 6 Unit Net Electric Generation 40.33 MW Collected during OTM-27/28 run 3 0



### 7 Unit Net Electric Generation 40 MW Collected during run 1 of Method 6C, 7E, 10, and 25A 0

8 Unit Net Electric Generation 40 MW Collected during run 2 of Method 6C, 7E, 10, and 25A 0

9 Unit Net Electric Generation 40.67 MW Collected during run 3 of Method 6C, 7E, 10, and 25A 0

Run Name Value UOM Comments Target Value 1 LOW NOX BURNERS 0
10 LOW NOX BURNERS 0


### 11 LOW NOX BURNERS 0
12 LOW NOX BURNERS 0
13 LOW NOX BURNERS 0


### 14 LOW NOX BURNERS 0
15 LOW NOX BURNERS 0
16 LOW NOX BURNERS 0


### 17 LOW NOX BURNERS 0
18 LOW NOX BURNERS 0
2 LOW NOX BURNERS 0


### 3 LOW NOX BURNERS 0
4 LOW NOX BURNERS 0
5 LOW NOX BURNERS 0


### 6 LOW NOX BURNERS 0
7 LOW NOX BURNERS 0
8 LOW NOX BURNERS 0


### 9 LOW NOX BURNERS 0
1 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0



### 10 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0

11 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0



### Sunday, January 30, 2011 Page 30 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 12 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0



### 13 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0

14 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0

15 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0



### 16 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0

17 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0



### 18 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0

2 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0



### 3 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0

4 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0



### 5 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0

6 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0



### 7 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0

8 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0



### 9 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0

1 ELECTROSTATIC PRECIPITATOR 0 0


### 10 ELECTROSTATIC PRECIPITATOR 0 0
11 ELECTROSTATIC PRECIPITATOR 0 0
12 ELECTROSTATIC PRECIPITATOR 0 0


### 13 ELECTROSTATIC PRECIPITATOR 0 0
14 ELECTROSTATIC PRECIPITATOR 0 0
15 ELECTROSTATIC PRECIPITATOR 0 0


### 16 ELECTROSTATIC PRECIPITATOR 0 0
17 ELECTROSTATIC PRECIPITATOR 0 0
18 ELECTROSTATIC PRECIPITATOR 0 0


### 2 ELECTROSTATIC PRECIPITATOR 0 0
3 ELECTROSTATIC PRECIPITATOR 0 0



### Sunday, January 30, 2011 Page 31 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010

Process Lab Run Data 4 ELECTROSTATIC PRECIPITATOR 0 0


### 5 ELECTROSTATIC PRECIPITATOR 0 0
6 ELECTROSTATIC PRECIPITATOR 0 0
7 ELECTROSTATIC PRECIPITATOR 0 0


### 8 ELECTROSTATIC PRECIPITATOR 0 0
9 ELECTROSTATIC PRECIPITATOR 0 0



### Sunday, January 30, 2011 Page 32 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010 Sampling / Stack Data Results Detail



### Location Stack Exit - Method 0011 Average Run Number 1 2 3 Test Date 4/1/2010 4/1/2010 4/1/2010 Run Start Time Run Finish Time Net Traversing Points 12 12 12 Net Run Time, minutes 120 120 120 Nozzle Diameter, inches 0.374 0.374 0.374 0.374 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.997 0.997 0.997 0.997 Barometric Pressure, inches of Mercury 29.9 29.9 29.9 29.900 Average Orifice Meter Differential, inches H2O 1.89 1.95 1.96 1.933 Dry Gas Meter Volume Sampled, cubic feet 88.809 95.915 97.129 93.951 Average Dry Gas Meter Temperature, °F 68.29 81.38 84.96 78.210 Dry Gas Meter Volume Sampled, dscf 88.846 93.648 94.213 92.236 Total Moisture Liquid collected, g 118 114 118 116.667 Volume of Water Vapor, standard cubic feet 5.55 5.37 5.55 5.490 Moisture Content of Stack Gas, % 5.88 5.42 5.56 5.620 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.9412 0.9458 0.9444 0.944 Carbon Dioxide, % 6.2 6.2 6.2 6.200 Oxygen, % 12.8 12.8 12.8 12.800 Carbon Monoxide & Nitrogen, % 81 81 81 81.000 Fuel Factor 1.31 1.31 1.31 Dry Molecular Weight, lb/lb-Mole 29.50 29.50 29.50 29.500 Wet Molecular weight, lb/lb-Mole 28.82 28.88 28.86 28.853 Flue Gas Static Pressure, inches of H2O -0.4 -0.4 -0.42 -0.407 Absolute Flue Gas Pressure, inches of Mercury 29.87 29.87 29.87 29.870 Average Stack Gas Temperature, °F 231.67 233.75 234.83 233.417 Average Velocity Head, inches of H2O 0.1254635874 52921 0.129903685

646092 0.130754766

828323 0.129
Average Stack Gas Velocity, feet/second 22.80 23.21 23.31 23.107 Stack Cross-Sectional Area, square feet 218.166 218.166 218.166 218.166 Dry Volumetric Flow Rate, dry scfm 214,073.9 218,332.0 218,607.8 217,004.567 Actual Wet Volumetric Flue Gas Flow Rate, acfm 298,451.1 303,818.0 305,127.0 302,465.367 Percent Isokinetic of Sampling Rate, % 98.9 102.2 102.7 101.267 Percent Excess Air, % 149.1 149.1 149.1 149.100 F-Factor, dscfm/MMBtu @ %O2 9481 9481 9481 9,481.000 Round Duct Diameter, inches 200 200 200 Rectangular Duct Width, inches 0 0 0 Rectangular Duct Length, inches 0 0 0 Fw 0 0 0 0.000 Fc 0 0 0 0.000



### Sunday, January 30, 2011 Page 33 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010
Location Stack Exit - Method 10 Average Run Number Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Fuel Factor Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Analyzer Make Analyzer Model Analyzer Serial Number Operating Range Operating Units No. Readings/Avg. Calibration Set Calibration Pre Zero Cylinder ID Calibration Pre Zero Cylinder Instrument Response Calibration Pre Zero Cylinder Bias Calibration Pre Zero Cylinder Drift Calibration Pre High Cylinder ID Calibration Pre High Cylinder Instrument Response Calibration Pre High Cylinder Bias Calibration Pre High Cylinder Drift Calibration Post Zero Cylinder ID Calibration Post Zero Cylinder Instrument Response Calibration Post Zero Cylinder Bias Calibration Post Zero Cylinder Drift Calibration Post High Cylinder ID Calibration Post High Cylinder Instrument Response Calibration Post High Cylinder Bias Calibration Post High Cylinder Drift Cavg Cavg Units Cgas Cgas Units Fuel Type Fw Fc Cgasw Cgasw Units



### Sunday, January 30, 2011 Page 34 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010
Location Stack Exit - Method 23 Average Run Number Test Date Run Start Time Run Finish Time Net Traversing Points Net Run Time, minutes Nozzle Diameter, inches Pitot Tube Coefficient Dry Gas Meter Calibration Factor Barometric Pressure, inches of Mercury Average Orifice Meter Differential, inches H2O Dry Gas Meter Volume Sampled, cubic feet Average Dry Gas Meter Temperature, °F Dry Gas Meter Volume Sampled, dscf Total Moisture Liquid collected, g Volume of Water Vapor, standard cubic feet Moisture Content of Stack Gas, % Moisture Saturation at Stack Gas Temperature, % Dry Mole Fraction Carbon Dioxide, % Oxygen, % Carbon Monoxide & Nitrogen, % Fuel Factor Dry Molecular Weight, lb/lb-Mole Wet Molecular weight, lb/lb-Mole Flue Gas Static Pressure, inches of H2O Absolute Flue Gas Pressure, inches of Mercury Average Stack Gas Temperature, °F Average Velocity Head, inches of H2O Average Stack Gas Velocity, feet/second Stack Cross-Sectional Area, square feet Dry Volumetric Flow Rate, dry scfm Actual Wet Volumetric Flue Gas Flow Rate, acfm Percent Isokinetic of Sampling Rate, % Percent Excess Air, % F-Factor, dscfm/MMBtu @ %O2 Round Duct Diameter, inches Rectangular Duct Width, inches Rectangular Duct Length, inches Fw Fc



### Sunday, January 30, 2011 Page 35 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010
Location Stack Exit - Method 25A Average Run Number Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Fuel Factor Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Analyzer Make Analyzer Model Analyzer Serial Number Operating Range Operating Units No. Readings/Avg. Calibration Set Calibration Pre Zero Cylinder ID Calibration Pre Zero Cylinder Instrument Response Calibration Pre Zero Cylinder Bias Calibration Pre Zero Cylinder Drift Calibration Pre High Cylinder ID Calibration Pre High Cylinder Instrument Response Calibration Pre High Cylinder Bias Calibration Pre High Cylinder Drift Calibration Post Zero Cylinder ID Calibration Post Zero Cylinder Instrument Response Calibration Post Zero Cylinder Bias Calibration Post Zero Cylinder Drift Calibration Post High Cylinder ID Calibration Post High Cylinder Instrument Response Calibration Post High Cylinder Bias Calibration Post High Cylinder Drift Cavg Cavg Units Cgas Cgas Units Fuel Type Fw Fc Cgasw Cgasw Units



### Sunday, January 30, 2011 Page 36 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010
Location Stack Exit - Method 26A Average Run Number Test Date Run Start Time Run Finish Time Net Traversing Points Net Run Time, minutes Nozzle Diameter, inches Pitot Tube Coefficient Dry Gas Meter Calibration Factor Barometric Pressure, inches of Mercury Average Orifice Meter Differential, inches H2O Dry Gas Meter Volume Sampled, cubic feet Average Dry Gas Meter Temperature, °F Dry Gas Meter Volume Sampled, dscf Total Moisture Liquid collected, g Volume of Water Vapor, standard cubic feet Moisture Content of Stack Gas, % Moisture Saturation at Stack Gas Temperature, % Dry Mole Fraction Carbon Dioxide, % Oxygen, % Carbon Monoxide & Nitrogen, % Fuel Factor Dry Molecular Weight, lb/lb-Mole Wet Molecular weight, lb/lb-Mole Flue Gas Static Pressure, inches of H2O Absolute Flue Gas Pressure, inches of Mercury Average Stack Gas Temperature, °F Average Velocity Head, inches of H2O Average Stack Gas Velocity, feet/second Stack Cross-Sectional Area, square feet Dry Volumetric Flow Rate, dry scfm Actual Wet Volumetric Flue Gas Flow Rate, acfm Percent Isokinetic of Sampling Rate, % Percent Excess Air, % F-Factor, dscfm/MMBtu @ %O2 Round Duct Diameter, inches Rectangular Duct Width, inches Rectangular Duct Length, inches Fw Fc



### Sunday, January 30, 2011 Page 37 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010
Location Stack Exit - Method 29 Average Run Number Test Date Run Start Time Run Finish Time Net Traversing Points Net Run Time, minutes Nozzle Diameter, inches Pitot Tube Coefficient Dry Gas Meter Calibration Factor Barometric Pressure, inches of Mercury Average Orifice Meter Differential, inches H2O Dry Gas Meter Volume Sampled, cubic feet Average Dry Gas Meter Temperature, °F Dry Gas Meter Volume Sampled, dscf Total Moisture Liquid collected, g Volume of Water Vapor, standard cubic feet Moisture Content of Stack Gas, % Moisture Saturation at Stack Gas Temperature, % Dry Mole Fraction Carbon Dioxide, % Oxygen, % Carbon Monoxide & Nitrogen, % Fuel Factor Dry Molecular Weight, lb/lb-Mole Wet Molecular weight, lb/lb-Mole Flue Gas Static Pressure, inches of H2O Absolute Flue Gas Pressure, inches of Mercury Average Stack Gas Temperature, °F Average Velocity Head, inches of H2O Average Stack Gas Velocity, feet/second Stack Cross-Sectional Area, square feet Dry Volumetric Flow Rate, dry scfm Actual Wet Volumetric Flue Gas Flow Rate, acfm Percent Isokinetic of Sampling Rate, % Percent Excess Air, % F-Factor, dscfm/MMBtu @ %O2 Round Duct Diameter, inches Rectangular Duct Width, inches Rectangular Duct Length, inches Fw Fc



### Sunday, January 30, 2011 Page 38 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010
Location Stack Exit - Method 6C Average Run Number Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Fuel Factor Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Analyzer Make Analyzer Model Analyzer Serial Number Operating Range Operating Units No. Readings/Avg. Calibration Set Calibration Pre Zero Cylinder ID Calibration Pre Zero Cylinder Instrument Response Calibration Pre Zero Cylinder Bias Calibration Pre Zero Cylinder Drift Calibration Pre High Cylinder ID Calibration Pre High Cylinder Instrument Response Calibration Pre High Cylinder Bias Calibration Pre High Cylinder Drift Calibration Post Zero Cylinder ID Calibration Post Zero Cylinder Instrument Response Calibration Post Zero Cylinder Bias Calibration Post Zero Cylinder Drift Calibration Post High Cylinder ID Calibration Post High Cylinder Instrument Response Calibration Post High Cylinder Bias Calibration Post High Cylinder Drift Cavg Cavg Units Cgas Cgas Units Fuel Type Fw Fc Cgasw Cgasw Units



### Sunday, January 30, 2011 Page 39 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010
Location Stack Exit - Method 7E Average Run Number Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Fuel Factor Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Analyzer Make Analyzer Model Analyzer Serial Number Operating Range Operating Units No. Readings/Avg. Calibration Set Calibration Pre Zero Cylinder ID Calibration Pre Zero Cylinder Instrument Response Calibration Pre Zero Cylinder Bias Calibration Pre Zero Cylinder Drift Calibration Pre High Cylinder ID Calibration Pre High Cylinder Instrument Response Calibration Pre High Cylinder Bias Calibration Pre High Cylinder Drift Calibration Post Zero Cylinder ID Calibration Post Zero Cylinder Instrument Response Calibration Post Zero Cylinder Bias Calibration Post Zero Cylinder Drift Calibration Post High Cylinder ID Calibration Post High Cylinder Instrument Response Calibration Post High Cylinder Bias Calibration Post High Cylinder Drift Cavg Cavg Units Cgas Cgas Units Fuel Type Fw Fc Cgasw Cgasw Units



### Sunday, January 30, 2011 Page 40 of 41

### Utility Boiler MACT ICR - Norwalk Harbor Station Unit 2
7/26/2010
Location Stack Exit - OTM - 27/28 Average Run Number Test Date Run Start Time Run Finish Time Net Traversing Points Net Run Time, minutes Nozzle Diameter, inches Pitot Tube Coefficient Dry Gas Meter Calibration Factor Barometric Pressure, inches of Mercury Average Orifice Meter Differential, inches H2O Dry Gas Meter Volume Sampled, cubic feet Average Dry Gas Meter Temperature, °F Dry Gas Meter Volume Sampled, dscf Total Moisture Liquid collected, g Volume of Water Vapor, standard cubic feet Moisture Content of Stack Gas, % Moisture Saturation at Stack Gas Temperature, % Dry Mole Fraction Carbon Dioxide, % Oxygen, % Carbon Monoxide & Nitrogen, % Fuel Factor Dry Molecular Weight, lb/lb-Mole Wet Molecular weight, lb/lb-Mole Flue Gas Static Pressure, inches of H2O Absolute Flue Gas Pressure, inches of Mercury Average Stack Gas Temperature, °F Average Velocity Head, inches of H2O Average Stack Gas Velocity, feet/second Stack Cross-Sectional Area, square feet Dry Volumetric Flow Rate, dry scfm Actual Wet Volumetric Flue Gas Flow Rate, acfm Percent Isokinetic of Sampling Rate, % Percent Excess Air, % F-Factor, dscfm/MMBtu @ %O2 Round Duct Diameter, inches Rectangular Duct Width, inches Rectangular Duct Length, inches Fw Fc



### Sunday, January 30, 2011 Page 41 of 41